王東萍 葛萬(wàn)文 袁國(guó)強(qiáng)



[摘要]?目的?通過(guò)網(wǎng)絡(luò)藥理學(xué)、分子對(duì)接的方法探究鷹嘴豆芽素A治療神經(jīng)膠質(zhì)瘤的作用機(jī)制。方法?檢索中藥系統(tǒng)藥理學(xué)數(shù)據(jù)庫(kù)與分析平臺(tái)(traditional?Chinese?medicine?systems?pharmacology?database?and?analysis?platform,TCMSP)、TargetNet、Swiss?Target?Prediction等數(shù)據(jù)庫(kù)和分析平臺(tái),篩選出鷹嘴豆芽素A對(duì)應(yīng)靶點(diǎn),利用DisGeNET、GeneCards等數(shù)據(jù)庫(kù)獲得神經(jīng)膠質(zhì)瘤的作用靶點(diǎn)。取藥物與疾病的交集靶點(diǎn),借助STRING數(shù)據(jù)庫(kù)進(jìn)行蛋白-蛋白相互作用(protein-protein?interaction,PPI)分析,利用Cytoscape?3.9.1軟件構(gòu)建潛在靶點(diǎn)網(wǎng)絡(luò)關(guān)系圖。對(duì)交集靶點(diǎn)通過(guò)DAVID數(shù)據(jù)庫(kù)進(jìn)行本體論富集分析(gene?ontology,GO)和京都基因和基因組百科全書(shū)(Kyoto?encyclopedia?of?genes?and?genomes,KEGG)通路富集分析。通過(guò)DockThor數(shù)據(jù)庫(kù)對(duì)鷹嘴豆芽素A和關(guān)鍵靶點(diǎn)進(jìn)行分子對(duì)接,Pymol軟件進(jìn)行可視化處理。結(jié)果?共篩選出鷹嘴豆芽素A靶點(diǎn)149個(gè),神經(jīng)膠質(zhì)瘤相關(guān)靶點(diǎn)5654個(gè),藥物與疾病交集靶點(diǎn)97個(gè),核心靶點(diǎn)為表皮生長(zhǎng)因子受體(epidermal?growth?factor?receptor,EGFR)、雌激素受體(estrogen?receptor,ESR1)、熱休克蛋白(heat?shock?protein,HSP)90AA1、基質(zhì)金屬蛋白酶(matrix?metalloproteinase,MMP)9、PPARG、PTGS2,靶點(diǎn)參與的功能主要與腫瘤細(xì)胞增殖、侵襲、凋亡等過(guò)程有關(guān)。GO富集分析發(fā)現(xiàn)鷹嘴豆芽素A在生物過(guò)程、細(xì)胞組成、分子功能多方面參與神經(jīng)膠質(zhì)瘤的治療。KEGG通路108條,包括腫瘤、化學(xué)致癌作用-受體活性、脂質(zhì)和動(dòng)脈粥樣硬化、PI3K/Akt等信號(hào)通路。分子對(duì)接結(jié)果顯示鷹嘴豆芽素A與關(guān)鍵靶點(diǎn)均有較好的結(jié)合活性。結(jié)論?鷹嘴豆芽素A可能通過(guò)抑制腫瘤細(xì)胞增殖、誘導(dǎo)凋亡、增強(qiáng)化療敏感性等發(fā)揮治療神經(jīng)膠質(zhì)瘤的作用。
[關(guān)鍵詞]?鷹嘴豆芽素A;神經(jīng)膠質(zhì)瘤;網(wǎng)絡(luò)藥理學(xué);分子對(duì)接
[中圖分類號(hào)]?R739.4????[文獻(xiàn)標(biāo)識(shí)碼]?A ????[DOI]?10.3969/j.issn.1673-9701.2024.05.001
Mechanism?of?Biochanin?A?in?treating?gliomas?based?on?network?pharmacology?and?molecular?docking
WANG?Dongping1,?GE?Wanwen2,?YUAN?Guoqiang3
1.School?of?traditional?Chinese?and?Western?Medicine,?Gansu?University?of?Chinese?Medicine;?Department?of?Clinical?Teaching,?Gansu?Provincial?Hospital,?Lanzhou?730000,?Gansu,?China;?2.Cuiying?Biomedical?Research?Center,?Lanzhou?University?Second?Hospital,?Lanzhou?730030,?Gansu,?China;?3.Key?Laboratory?of?Neurology,?Gansu?Province,?Lanzhou?730030,?Gansu,?China
[Abstract]?Objective?To?analyze?the?mechanism?of?Biochanin?A?in?the?treatment?of?Gliomas?based?on?network?pharmacology?and?molecular?docking.?Methods?Traditional?Chinese?medicine?systems?pharmacology?database?and?analysis?platform?(TCMSP),?TargetNet,?Swiss?Target?Prediction?were?used?to?search?the?active?components?and?targets?of?Biochanin?A.?DisGeNET,?GeneCards?databases?were?used?to?search?the?corresponding?targets?of?Gliomas.?The?intersection?of?active?components?of?Biochanin?A?and?gliomas?target?were?selected?to?obtain?the?potential?target?of?Biochanin?A?in?treating?Gliomas.?Protein?gene?interaction?data?were?obtained?by?STRING?database,?and?protein-protein?interaction?network?was?constructed?by?importing?into?Cytoscape?software.?Gene?ontology?(GO)?function?and?Kyoto?encyclopedia?of?genes?and?genomes?(KEGG)?pathway?enrichment?analysis?of?the?same?target?proteins?of?drug?and?disease?were?carried?out?by?DAVID?database.?Molecular?docking?was?performed?by?using?DockThor?and?Pymol?software.?Results?A?total?of?149?targets?of?Biochanin?A,?5654?gliomas?relate-genes,?97?common?targets?of?Biochanin?A?and?gliomas?are?collected.?The?key?targets?were?epidermal?growth?factor?receptor?(EGFR),?estrogen?receptor?(ESR1),?heat?shock?protein?(HSP)90AA1,?matrix?metalloproteinase?(MMP)9,?PPARG?and?PTGS2.?The?targets?were?mainly?play?an?essential?role?in?cell?proliferation,?invasion,?cell?apoptosis,?and?other?biological?pathways.?GO?enrichment?analysis?demonstrated?that?Biochanin?A?could?involve?the?treatment?of?Gliomas?in?biological?process,?cell?composition?and?molecular?function.?KEGG?108?signaling?pathways?mainly?related?to?pathways?in?cancer,?chemical?carcinogenesis-receptor?activation,?Lipid?and?atherosclerosis,?PI3K/Akt?pathway.?Molecular?docking?indicated?that?Biochanin?A?had?a?good?bonding?activity?with?the?key?targets.?Conclusion?Biochanin?A?may?play?a?role?in?the?treatment?of?glioma?by?inhibiting?tumor?cell?proliferation,?inducing?apoptosis?and?enhancing?chemotherapy?sensitivity.?The?study?built?a?foundation?for?drug?development?and?innovative?research.
[Key?words]?Biochanin?A;?Gliomas;?Network?pharmacology;?Molecular?docking
神經(jīng)膠質(zhì)瘤是最常見(jiàn)的原發(fā)性中樞神經(jīng)系統(tǒng)腫瘤,起源于膠質(zhì)細(xì)胞,增殖快,侵襲性強(qiáng),預(yù)后極差[1]。它是最復(fù)雜的癌癥類型之一,約占中樞神經(jīng)系統(tǒng)腫瘤的45%,5年生存率約為5%[2]。膠質(zhì)瘤的主要治療方法是基于經(jīng)典的Stupp方案,包括手術(shù)切除聯(lián)合術(shù)后放療和替莫唑胺化療。此外,免疫治療、靶向治療和其他新的治療方法在膠質(zhì)瘤的治療方面取得了很大的進(jìn)展。然而總體結(jié)果仍然不令人滿意,治療后易轉(zhuǎn)移和復(fù)發(fā)[3]。中醫(yī)具有完整的理論體系和辨證論治的主導(dǎo)思想,在增效減毒,改善臨床癥狀,提高生活質(zhì)量,降低復(fù)發(fā)率,延長(zhǎng)患者生存期等方面發(fā)揮重要作用,是神經(jīng)膠質(zhì)瘤防治的重要方法。
鷹嘴豆芽素A(Biochanin?A,BCA)是一種存在于紅三葉草、鷹嘴豆、大豆、花生等豆科植物中的含異黃酮的天然化合物,在體內(nèi)某些生理和病理過(guò)程中可以起到植物雌激素的作用。大量研究表明,鷹嘴豆素A具有防治骨質(zhì)疏松、降血脂、抗氧化、抗炎、抗菌和抗腫瘤等生物學(xué)功能[4]。與其他一些植物雌激素在婦科癌癥中的促進(jìn)作用不同,BCA還對(duì)咽鱗癌、肝細(xì)胞性肝癌、胰腺癌、前列腺癌和結(jié)腸腫瘤有抗腫瘤作用[5]。本研究基于網(wǎng)絡(luò)藥理學(xué)和分子對(duì)接技術(shù),綜合分析鷹嘴豆素A的作用靶點(diǎn)及其與神經(jīng)膠質(zhì)瘤相關(guān)的作用途徑,以期發(fā)現(xiàn)鷹嘴豆素A治療神經(jīng)膠質(zhì)瘤的潛在作用靶點(diǎn),闡明鷹嘴豆素A治療神經(jīng)膠質(zhì)瘤的作用機(jī)制。
1??資料與方法
1.1??獲取藥物靶點(diǎn)
分別從TargetNet(http://targetnet.scbdd.com/),TCMSP(https://old.tcmsp-e.com/tcmsp.php),STITCH(http://stitch.embl.de/)數(shù)據(jù)庫(kù)和Swiss?Target?Prediction平臺(tái)(http://www.swisstargetprediction.ch/)查詢鷹嘴豆芽素A的藥物靶點(diǎn),合并去重。
1.2??獲取神經(jīng)膠質(zhì)瘤靶點(diǎn)
以“Gliomas”為關(guān)鍵詞,從DisGeNET(https://?www.disgenet.org/),GeneCards(https://www.genecards.?org/),TTD(http://db.idrblab.net/ttd/)數(shù)據(jù)庫(kù)檢索神經(jīng)膠質(zhì)瘤的靶點(diǎn)基因,獲得的疾病靶點(diǎn)合并去重后在UniProt(https://www.uniprot.org/)數(shù)據(jù)庫(kù)中進(jìn)行標(biāo)準(zhǔn)化處理。
1.3??構(gòu)建蛋白質(zhì)-蛋白質(zhì)相互作用網(wǎng)絡(luò)
為進(jìn)一步明確BCA治療神經(jīng)膠質(zhì)瘤的潛在作用靶點(diǎn)之間的相互作用關(guān)系,將篩選出的BCA和神經(jīng)膠質(zhì)瘤的共同靶點(diǎn)導(dǎo)入STRING數(shù)據(jù)庫(kù)獲取蛋白互作信息,物種設(shè)為“Homo?sapiens”,設(shè)置互作強(qiáng)度大于0.4,隱藏沒(méi)有相互作用的靶點(diǎn),借助Cytoscape?3.9.1軟件構(gòu)建PPI網(wǎng)絡(luò)進(jìn)行進(jìn)一步分析和可視化。
1.4??富集分析以及通路分析
對(duì)BCA治療神經(jīng)膠質(zhì)瘤潛在靶點(diǎn)通過(guò)DAVID數(shù)據(jù)庫(kù)(https://david.ncifcrf.?gov/tools.jsp)進(jìn)行基因本體論富集分析(gene?ontology,GO),檢索其生物過(guò)程(biological?process,BP),分子功能(molecular?function,MF),細(xì)胞組分(cellular?component,CC)與京都基因和基因組百科全書(shū)(Kyoto?encyclopedia?of?genes?and?genomes,KEGG)通路富集分析。分別選取前10個(gè)進(jìn)行富集分析繪制富集分析圖。
1.5??分子對(duì)接
通過(guò)Pubchem(https://pubchem.ncbi.nlm.nih.?gov/)檢索獲得BCA的3D結(jié)構(gòu),從PDB(http://?www.rcsb.org/pdb/home/home.do)中檢索獲取關(guān)鍵靶點(diǎn)的受體蛋白,將活性成分的3D結(jié)構(gòu)和關(guān)鍵靶點(diǎn)的受體蛋白結(jié)構(gòu)上傳至在線分析平臺(tái)DockThor[6](https://dockthor.lncc.br/v2/)進(jìn)行分子對(duì)接,利用Pymol軟件通過(guò)加氫,去除水分子等步驟,對(duì)受體和配體之間的相互作用進(jìn)行可視化。
2??結(jié)果
2.1??藥物和疾病靶點(diǎn)的預(yù)測(cè)
利用TCMSP、Swiss?Target?Predication等數(shù)據(jù)庫(kù)檢索BCA對(duì)應(yīng)的靶點(diǎn),整理后去重,在STRING數(shù)據(jù)庫(kù)中進(jìn)行標(biāo)準(zhǔn)化,共得到BCA藥物靶點(diǎn)149個(gè)。
通過(guò)GeneCards、DisGeNET、TTD數(shù)據(jù)庫(kù)檢索神經(jīng)膠質(zhì)瘤相關(guān)靶點(diǎn)基因,最后將3個(gè)數(shù)據(jù)庫(kù)靶點(diǎn)基因匯總后去重,即得到神經(jīng)膠質(zhì)瘤的相關(guān)靶點(diǎn)基因5654個(gè)。建立成分靶點(diǎn)及疾病靶點(diǎn)數(shù)據(jù)集,對(duì)活性成分和疾病靶點(diǎn)取交集,獲得97個(gè)相交靶點(diǎn),繪制韋恩圖(圖1)。
2.2??鷹嘴豆芽素A治療神經(jīng)膠質(zhì)瘤的靶點(diǎn)PPI網(wǎng)絡(luò)分析
為進(jìn)一步揭示鷹嘴豆芽素A抗神經(jīng)膠質(zhì)瘤的作用機(jī)制,用Cytoscape軟件繪制97個(gè)關(guān)鍵靶點(diǎn)網(wǎng)絡(luò)關(guān)系圖(用Degree值排序關(guān)鍵靶點(diǎn)),Degree值越高表明該靶點(diǎn)與疾病的關(guān)聯(lián)性越高。整合后,保留了6個(gè)degree值最高的作為鷹嘴豆芽素A治療神經(jīng)膠質(zhì)瘤的關(guān)鍵靶點(diǎn)EGFR、ESR1、HSP90AA1、MMP9、PPARG、PTGS2。
2.3??GO和KEGG富集分析
對(duì)BCA與神經(jīng)膠質(zhì)瘤的潛在靶點(diǎn)通過(guò)DAVID數(shù)據(jù)庫(kù)進(jìn)行GO富集分析得到BP359條,CC60條,MF121條,共540條,分別篩選前10條作富集分析圖(圖2)。生物過(guò)程包括蛋白質(zhì)磷酸化、信號(hào)轉(zhuǎn)導(dǎo)、炎癥反應(yīng)、細(xì)胞凋亡、RNA聚合酶調(diào)節(jié);細(xì)胞組成包括質(zhì)膜、胞液、細(xì)胞質(zhì)、細(xì)胞核、線粒體、內(nèi)質(zhì)網(wǎng)膜等;分子功能包括蛋白質(zhì)結(jié)合、ATP結(jié)合、DNA結(jié)合、蛋白激酶活性等。KEGG通路富集分析108條,選取P值最小的前20條通路并制作成氣泡圖,主要富集于腫瘤通路、化學(xué)致癌作用-受體活性、脂質(zhì)和動(dòng)脈粥樣硬化、PI3K/Akt、神經(jīng)活性受體配體、CAMP信號(hào)通路、活性氧等信號(hào)通路具體通路結(jié)果見(jiàn)圖3。
2.4??分子對(duì)接
選取神經(jīng)膠質(zhì)瘤PPI網(wǎng)絡(luò)中degree較高的6個(gè)核心蛋白EGFR、ESR1、HSP90AA1、MMP9、PPARG、PTGS2進(jìn)行分子對(duì)接,對(duì)接結(jié)合能見(jiàn)表1。根據(jù)Dockthor計(jì)算,配體與受體相結(jié)合時(shí),所需結(jié)合能越低,結(jié)合就越穩(wěn)定,效果越好。將結(jié)果導(dǎo)入Pymol軟件進(jìn)行可視化,得到分子對(duì)接三維圖(圖4)。
3??討論
神經(jīng)膠質(zhì)瘤患者的中位生存期很少超過(guò)18個(gè)月,預(yù)后極差,所以確定膠質(zhì)瘤患者新的治療方案至關(guān)重要[7]。網(wǎng)絡(luò)藥理學(xué)是一種有前途的生物信息學(xué)方法,可以從整體水平上系統(tǒng)地了解藥物與其靶標(biāo)之間相互作用的分子機(jī)制及其在疾病中的意義[8]。近年來(lái),網(wǎng)絡(luò)藥理學(xué)已被用于預(yù)測(cè)某些化合物在多種疾病中的有效靶點(diǎn)和途徑,尤其是與信號(hào)轉(zhuǎn)導(dǎo)密切相關(guān)的癌癥。分子對(duì)接技術(shù)是從已知的蛋白質(zhì)和小分子化合物出發(fā),通過(guò)模擬蛋白質(zhì)的幾何構(gòu)型和能量匹配來(lái)識(shí)別藥物的重要方法[9]。
通過(guò)網(wǎng)絡(luò)藥理學(xué)對(duì)BCA治療神經(jīng)膠質(zhì)瘤的作用機(jī)制進(jìn)行系統(tǒng)研究,發(fā)現(xiàn)其中degree值較大的6個(gè)靶點(diǎn)為EGFR、ESR1、HSP90AA1、MMP9、PPARG、PTGS2。EGFR是表皮生長(zhǎng)因子受體其與腫瘤細(xì)胞的增殖、血管生成、腫瘤侵襲、轉(zhuǎn)移及細(xì)胞凋亡等有關(guān)。BCA和替莫唑胺聯(lián)合應(yīng)用對(duì)U-87和T98膠質(zhì)母細(xì)胞瘤細(xì)胞通過(guò)調(diào)控p-ERK、p-AKT、EGFR及c-Myc的水平,BCA增強(qiáng)替莫唑胺抗腫瘤作用,增強(qiáng)化療藥物的敏感性[10]。ESR1是雌激素受體,鷹嘴豆芽素A屬于異黃酮類植物雌激素,其分子結(jié)構(gòu)和大小類似于雌激素,可以發(fā)揮雌激素作用,可以起到神經(jīng)保護(hù)的作用[11]。
研究證明BCA在缺血缺氧再灌注大鼠模型中通過(guò)減輕腦水腫、減少腦梗死面積起到神經(jīng)保護(hù)作用[12]。HSP90AA1屬于熱休克蛋白90α家族,在腦膠質(zhì)瘤組織中HSP90蛋白的表達(dá)水平上調(diào)是腫瘤細(xì)胞增殖和產(chǎn)生耐藥的關(guān)鍵蛋白,與患者的預(yù)后呈負(fù)相關(guān)[13]。PPARG調(diào)節(jié)脂肪細(xì)胞分化并控制脂質(zhì)和葡萄糖穩(wěn)態(tài)相關(guān)基因的表達(dá)。PPARG通過(guò)抑制炎癥介質(zhì)的產(chǎn)生具有抗炎作用[14]。PTGS2是花生四烯酸合成前列腺素的限速酶,在多種腫瘤中表達(dá)上調(diào)。Tan等[7]研究發(fā)現(xiàn)PTGS2在神經(jīng)膠質(zhì)瘤放療耐藥患者中高表達(dá),可激活NF-κB信號(hào)通路,防止放療后DNA損傷。PTGS2可促進(jìn)腫瘤細(xì)胞增殖,提高放射耐受性。MMP9是基質(zhì)金屬蛋白酶,參與多種腫瘤的病理學(xué)過(guò)程。有研究表明,在神經(jīng)膠質(zhì)瘤患者血清中基質(zhì)金屬蛋白酶MMP1、MMP2、MMP9水平明顯升高,與腫瘤分期和臨床分期呈正相關(guān),和預(yù)后呈負(fù)相關(guān)[15]。BCA可通過(guò)降低MMP9的酶活性導(dǎo)致U87膠質(zhì)母細(xì)胞瘤細(xì)胞的侵襲性降低[16]。
GO功能分析顯示,BCA主要通過(guò)調(diào)控細(xì)胞增殖、凋亡過(guò)程、一氧化氮生物合成、缺氧和炎癥反應(yīng)等方面參與神經(jīng)膠質(zhì)瘤治療。KEGG通路富集分析表明,癌癥通路、PI3K-Akt、脂質(zhì)和動(dòng)脈粥樣硬化、活性氧等信號(hào)通路是治療神經(jīng)膠質(zhì)瘤的主要作用機(jī)制。激活的PI3K/AKT/mTOR途徑增加了血管內(nèi)皮生長(zhǎng)因子的表達(dá),導(dǎo)致血管無(wú)力,血流緩慢和間質(zhì)壓力上升,該通路介導(dǎo)腫瘤轉(zhuǎn)移[17]。有研究表明鷹嘴豆芽素A有降血脂作用,在高脂血癥的小鼠中鷹嘴豆芽素A可降低低密度脂蛋白膽固醇和總膽固醇水平[18]。氧化應(yīng)激也是導(dǎo)致神經(jīng)變性、衰老、腫瘤發(fā)生的重要因素[19],因此,清除自由基和激活細(xì)胞保護(hù)防御系統(tǒng)有利于健康。鷹嘴豆素A可對(duì)神經(jīng)炎癥和氧化應(yīng)激引起的神經(jīng)退行性疾病有保護(hù)作用[20]。
鷹嘴豆芽素A可能通過(guò)調(diào)節(jié)PI3K-Akt、脂質(zhì)和動(dòng)脈粥樣硬化、神經(jīng)受體配體、活性氧起作用。分子對(duì)接顯示,鷹嘴豆芽素A與EGFR、ESR1、HSP90AA1、MMP9、PPARG、PTGS2等關(guān)鍵靶點(diǎn)有較好的結(jié)合活性。綜上所述,本研究采用網(wǎng)絡(luò)藥理學(xué)和分子對(duì)接技術(shù)初步探討了鷹嘴豆芽素A治療神經(jīng)膠質(zhì)瘤的潛在作用機(jī)制,這是一個(gè)多靶點(diǎn)、多通路、多途徑的復(fù)雜過(guò)程。但本研究?jī)H從理論角度探討了其參與抗腫瘤的機(jī)制,后續(xù)研究可在此基礎(chǔ)上進(jìn)一步開(kāi)展臨床和基礎(chǔ)實(shí)驗(yàn)加以驗(yàn)證,深入研究鷹嘴豆芽素A治療神經(jīng)膠質(zhì)瘤的作用機(jī)制。
利益沖突:所有作者均聲明不存在利益沖突。
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